topic LS1046A PBI in Layerscape

LS1046A PBI

renaud — Tue, 15 Jun 2021 15:48:51 GMT

Question regarding the file board/freescale/ls1046ardb/ls1046ardb_qspi_pbi.cfg

The scrachpad register 2 (BOOTLOCPTR)

09570604 10000000

Why is the address (0x10000000) is not pointing to QSPI flash (0x40100000) where U-boot is supposed to be?

Is not is used to boot from QSPI?

Cheers,

Renaud

Re: LS1046A PBI

ufedor — Tue, 15 Jun 2021 18:24:55 GMT

RCW sources actually used by LSDK are located here:

https://source.codeaurora.org/external/qoriq/qoriq-components/rcw/tree/ls1046ardb?h=LSDK-20.12

Re: LS1046A PBI

renaud — Wed, 16 Jun 2021 13:11:19 GMT

Seems my reply did not go through. SO hopefully not repeating myself

If build the QPSI SPL U-boot, the PBI contains

0570604 10000000

This seems to be an OCRAM1 address. How does the CPU find the boot loader considering the file spl/u-boot-spl.pbl starts with the RCW+PBI then the SPL?

Is the CPU executing sequentially after finding the hand of PBI?

Re: LS1046A PBI

ufedor — Tue, 22 Jun 2021 17:05:23 GMT

Please refer to RCW sources actually used by LSDK which are located here:

https://source.codeaurora.org/external/qoriq/qoriq-components/rcw/tree/ls1046ardb?h=LSDK-20.12

Re: LS1046A PBI

renaud — Wed, 23 Jun 2021 09:37:04 GMT

Thanks. I understand how it works.

When booting from QSPI, the QSPI is mapped to the OCRAM and RCW+PBI+SPL executed from there.

Cheers,

Renaud